Gas burner



J. c. ROGERS GAS BURNER June 18, 1935.

Filed July 2, 1954 Patented June 18, 1935 V UNITED ,STATES, PATENT OFFICE GAS BURNER John C. Rogers, Cicero, assignor to Crown Stove Works, Cicero, 111., a. corporation of Illinois I Application July 2, 1934, Serial No. 733,439

3 Claims. (Cl. 158-116) The present invention relates to burners for 'cally cast integral with the burner ring itself, gas stoves, ranges, and the like, having referas shown in Fig. 2. This mixing tube is proence more particularly to burners of the annuvided at its outerend with the usual gas cock lar type. and air-regulating valve (not shown).

5 Burners of this type are commonly formed The efficiency of burners of this type depends, 5

with variously grouped jet ducts in the top wall to a large extent, on the provision of an adeth'ereof, one known arrangement consisting of quate supply of secondary air to the flame jets. concentric inner and outer rows of ducts border- This secondary air is not admitted through the ing the inner and outer peripheral walls of the burner and jet ducts, but is an external upward l0 burner. flow of air around the burner induced by the The burner of my present invention is based heated condition of the air directly above the on the-last-mentioned type, but, with a view to burner; and the. more perfectly such draft of greater eihciency and reduced cost of manufacsecondary air is broughtjinto contact with the ture, substitutes for the outer row of jet ducts Bunsen flame, the purer and hotter the flame a continuous horizontal annular duct or aperwill be. With a view, therefore, to providing for 15 ture communicating with the chamber of the the ample flow of secondary air to the outer burner ring and opening through the ring beannular sheet flame issuing from the aperture tween the top and outer peripheral walls thereof, I5, I give the outer surface of the wall l0 an so as to provide a continuous annular sheet upward flare, and form thereon a ring of flutes flame surrounding and concentric with the inner H, the upper ends of which merge into the aper- 2O row of jet flames. It also includes other structure H5 at an acute angle to the plane of the tural features hereinafter described and claimed. latter. I also preferably form on the inner pe- A preferred embodiment of the invention is ripheral wall ll similar flutes 18 disposed bedisclosed in the accompanying drawing, in tween adjacent jet ducts It, whereby-an ample WhiCh volume of secondary air is supplied to the jet 25 Fig. 1 is a top plan view with the mixer tube flames issuing from the ducts It. broken out. The efliciencyv of a Bunsen burner also depends,

Fig. 2 is a central vertical section on the line to some extent, on the thoroughness and uni- 2--2 of Fig. 1. formity with which the gas and primary air'ad- Fig. 3 is a side elevation. mitted through the mixing tube are commingled 30 As stated above, one purpose or object in the before the mixture is ignited. With a view to development of the present improvement has improving the present burner in this regard, I been to reduce the cost of manufacture, and this 'form on the internal walls of the burner ring is accomplished mainly through a one-piece conflutes or corrugations l9 and 20 which act as struction of burner which may also include the baffles on the inflowing gas and primary air 35 usual mixing tube as an integral part thereof. and effect a thorough mixture of the two before The hollow burner ring is made as a cored castthey reach the burner passages I l and I5. ing, and comprises an outer peripheral wall Ill, At opposite points on the burner ring are an inner peripheral wall- H, a bottom wall l2, oifsets 2! formed with apertures 22 that com- 40 and a top or cover wall l3. As clearly shown municate with the chamber of the ring, and at 40 in Fig. 2, the top wall I3 is made integral or conan intermediate point is an offset 2| formed tinuous with the top edge of the wall ll, and with an aperture 22' that communicates with substantially at the juncture of said walls ll the mixing tube it. These provisions are for use and i3 'there is drilled a circular row of jet in connection with channels or conduits for ducts M, which preferably'are slightly inclined lighting the burner. 45

- upwardly toward the axis of the burner ring. Specific details of the structure herein shown The outer edge of the top wall I3 is spaced from and described may be varied within the principle the top edge of the outer peripheral wall ill to of the invention and without sacrifice of its form a continuous narrow horizontal annular eflicency for the purposes stated; and hence, I

aperture 15 communicating with the chamber of do not limit the invention to the specific struc- 50 l the burner ring and, when. the burner is ignited, ture presented for purposes of illustration, but giving a continuous annular sheet flame at the reserve such modifications and variations as fall outer edge of theburner. within the spirit of the appended claims. The is designates the mixing tube which, in the term ring as used herein is not intended to present instance, is conveniently and economibe limited to a circular structure, since obviously 55 the burner may be round, oblong, or polygonal within purview of the invention.

I claim 1. A gas burner, comprising a one-piece hollow ring formed in its top wall with a row of upwardly and inwardly inclined jet ducts bordering its inner periphery and communicating with the chamber of said ring, the inner peripheral wall of said ring being formed with flutes between adjacent ducts of the row for the passage of secondary air; said ring also having a continuous horizontal annular flame aperture opening above its outer peripheral wall just below the outer periphery of said top wall and said top wall being formed as an integral extension of said inner peripheral wall.

2. A gas burner, comprising a, one-piece hollow ring having a continuous horizontal annular aperture between its top and outer peripheral walls, said outer peripheral wall formed on its outer side with a row of upwardly and outwardly inclined flutes meeting said aperture at an acute angle to the plane of the latter for the flow of secondary air.

3. A gas burner, comprising a one-piece hollow ring formed in its top wall with a row of upwardly and inwardly inclined jet ducts bordering its inner periphery and communicating with the chamber of said ring, the inner peripheral wall of said ring being formed with flutes between adjacent ducts of the row for the passage of secondary air; the top wall of said ring being formed as an integral extension of said inner peripheral wall and its outer peripheral portion overlying and narrowly spaced from the top edge of the outer peripheral wall to form a continuous horizontal annular flame aperture, and said outer peripheral wall being formed on its outer side with a row of upwardly and outwardly inclined flutes meeting said aperture at an acute angle to the plane of the latter for the flow of secondary air.

JOHN C. ROGERS. 

